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It is behind the radio and it is replaceable. Here are the directions. The attached pictures correlate with the directions. If you need directions for removing the radio, let me know.
2003 Ford Truck Excursion 4WD V10-6.8L VIN S
Vehicle Powertrain Management Fuel Delivery and Air Induction Fuel Pump Fuel Pump Relay Service and Repair Procedures
1. Remove the radio.
2. Remove the relay cover.
3. Remove the fuel pump relay.
1. To install, reverse the removal procedure.
Let me know if this helps.
Images (Click to enlarge)
Saturday, April 20th, 2019 AT 9:20 PM